Itsines said that each time she posts one of these dramatic before-and-afters she sees the same thing: people commenting with negativity. Phrases like "you looked better before" and "why do all these people look ill in their after pics?" pop up regularly according to Itsines, undermining all the hard work that these women have poured into their workouts and fitness habits. "With social media, it is very easy to comment and become what we describe as the 'keyboard warriors,'" she wrote. "Something important to remember about body shaming is that it doesn't necessarily always need to be intentional. What I mean is, people don't necessarily act or say things while consciously thinking, 'I want to make that person upset.'" But, of course, that doesn't mean it isn't hurtful to see your dedication being written off by strangers online.

Luckily, as always, Itsines has a solution. In her post, she gave four tips for reducing body negativity online, including being more aware of what you say to others, remembering that your opinion might not matter to them and focusing on saying one positive compliment to someone every day. (You can read the full post here.)

Her message is loud, clear and important: we have to stop tearing each other down online. And don't be so hard on yourself, either: "Stop looking at yourself as something that needs to be 'fixed,' [and] focus on improvements. Focus on health and focus on happiness. Create goals and smash them. Encourage others to do the same and help build a world we would be proud to have our kids grow up in."